September, October, and November are great months to prepare your own for the upcoming deep winter freeze. With cooler temperatures and more moisture, it’s important to prepare your lawn for current conditions and for what’s to come. At a minimum, feed your lawn with a winterizer fertilizer and reseed the lawn. Ideally, however, you should aerate, thatch, and over-seed. Keep in mind that the time for overseeing is much shorter in fall than in spring. Because of that, over-seeding and reseeding can wait until spring, but if you must do it in fall do it as early as possible.